Pipe-wrench



(No Model.) G. W. PORTER.

PIPE WRENCH.

Patented Mar. '7, 1893.

UNITED STATES PATENT OFFICE.

GEoRGE w PORTER, OF PARKERSBURG, WEST vIRGINIA.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 492,834, dated March 7,1893. Application filed November 9, 1891. Renewed January 17I 1893.Serial No. 458,737. (No model.)

To all whom it may concern:

Be it known that I, GEORGE W. PORTER, a citizen of the United States ofAmerica, residing at Parkersburg, in the county of Wood, in the State ofWest Virginia, have invented certain new and useful Improvements inPipe- Wrenches, of which the following is a specification. 7

My invention relates to improvements in pipe-wrenches of that kind orconstruction having a pivoted jaw adjustably supported on ahandle, theend of which handle engages with the pipe when the implement isoperated.

My invention consists in certain details of construction and thecombination of the parts, as hereinbelow specified and particularlypointed out in the claim.

In the accompanying drawings: Figure 1 is a View in elevation of thecomplete implement, in operative connection with a pipe. Fig. 2 is aview in elevation taken at right angles to the illustration in Fig. 1,and Fig. 3 is a similar view taken with the implement turned in reverseposition to the illustration shown in Fig. 2. v

a designates the handle of the implement, provided with screw-threads 1,at its lower portion. The lower end of the handle is formed with asquare-faced head 2, integral with the handle; the bottom edge of one ofthe four sides of which engages the pipef, when the implement isarranged on the pipe, as shown in Fig. 1 of the drawings. threadedportion of the handle is arranged a cross-piece b, the hole through thispiece being threaded to engage the threads of the bandle. The outer endsof this cross-piece b are rounded to form bearings 2, 3, on which ispivoted or hung the jaw c. The jaw 0 consists of a single piece of metalhaving the arms substantially parallel with each other, with On the.

the ends pivoted or hung on the bearings of the cross-piece on thehandle; and'having its outer end struck or bent down at an angle to thearms, as seen at c, in Fig. l of the drawings, forming the grip-piece ofthe jaw and a bridge 0 integral with the arms.

On the face of the cross-piece b on the handle is secured the stem of aT-shaped spring (1, the arms of which bear on the arms of the pivotedjaw and tend to always insure the engagement of the jaw with the pipe.

It will be perceived that by making the head 6 of the handle four sided,four grippingedges are provided whereby the adjustment is made at everyquarter turn of the handle through the cross-piece; and that by makingthe jaw in the shape of a yoke, the grip on the pipe is broadenedand'the head e comes centrally between the bars or arms of the jaw.

Having thus described my invention, what I claim,and desire to secure byLetters Patent, is-

Ina pipe-wrench, the handle a provided .with screw-threads at its lowerportion and ranged and combined to operate substantially as specified.

GEORGE W. PORTER. Witnesses:

JOHN GRIGSLEY MoCLUER, WALTER EDMUND MoDoUGLE, WILLIAM HENRY MAYBERRY.

